12156606017 has 2 divisors, whose sum is σ = 12156606018. Its totient is φ = 12156606016.

The previous prime is 12156605999. The next prime is 12156606023. The reversal of 12156606017 is 71060665121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6737290561 + 5419315456 = 82081^2 + 73616^2 .

It is a cyclic number.

It is not a de Polignac number, because 12156606017 - 2³⁰ = 11082864193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12156606097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6078303008 + 6078303009.

It is an arithmetic number, because the mean of its divisors is an integer number (6078303009).

Almost surely, 2^12156606017 is an apocalyptic number.

It is an amenable number.

12156606017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12156606017 is an equidigital number, since it uses as much as digits as its factorization.

12156606017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 12156606017 in words is "twelve billion, one hundred fifty-six million, six hundred six thousand, seventeen".